.Gotop {
  right:10%;
  bottom:10%;
  width: 45px;
  height: 45px;
  line-height: 45px;
  border-radius: 5px;
  position: fixed;
  cursor: pointer;
  text-align: center;
  transition: all .3s;
  z-index: 1000;
  opacity: 0;
  display: none;
  background: #ffffff;
  box-shadow: rgba(0, 0, 0, 0.2) 0px 2px 4px -1px, rgba(0, 0, 0, 0.14) 0px 4px 5px 0px, rgba(0, 0, 0, 0.12) 0px 1px 10px 0px;
}

.Gotop:active {
  background-color: #333;
}
.Gotop .go-top-inner{
  width: 100%;
  height: 100%;
  position: relative;
}
.Gotop.active {
  display: block;
  animation: fadeTo .7s forwards;
}
.Gotop img{
  width: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%)
}


@keyframes fadeTo {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@media screen and(max-width:1024px) {
  .Gotop {
    right: 1em;
  }
}